4. Propose a solution of case study as described below. A router is a device that is used to connect networks together and route packets of data from one network to another. Routers have the flexibility of being able to learn network routes in a variety of ways. Different types of routing protocols are applied case by case. Consider the case below: Kelvin wants to set up the network of his new company which has four offices at separate locations. The first office has four departments which are located on two different floors. Each floor has two departments. The second office has three departments located on three different floors of a building. The third office has three departments located in the same floor. The fourth office has two departments located in same floor. Assuming each department has 50 PCs. You are required to provide the following in your solution. Network Diagram IP Addressing with subnets Type of routing protocol used Routing table of the different routers Number of VLAN which you might use Include the router or switch models that you might use Indicate if trunking protocol is used You can use the IP addresses (Class A 11.x.x.x for host PCs, Class C 192.169.2.x for router links) for this new company. There is also a requirement that no matter which department's network is down, any other departments shall be able to communicate with each other. You are permitted to mention proprietary brands/models in your description. Please state assumptions and additional features if any. 4. Propose a solution of case study as described below. A router is a device that is used to connect networks together and route packets of data from one network to another. Routers have the flexibility of being able to learn network routes in a variety of ways. Different types of routing protocols are applied case by case. Consider the case below: Kelvin wants to set up the network of his new company which has four offices at separate locations. The first office has four departments which are located on two different floors. Each floor has two departments. The second office has three departments located on three different floors of a building. The third office has three departments located in the same floor. The fourth office has two departments located in same floor. Assuming each department has 50 PCs. You are required to provide the following in your solution. Network Diagram IP Addressing with subnets Type of routing protocol used Routing table of the different routers Number of VLAN which you might use Include the router or switch models that you might use Indicate if trunking protocol is used You can use the IP addresses (Class A 11.x.x.x for host PCs, Class C 192.169.2.x for router links) for this new company. There is also a requirement that no matter which department's network is down, any other departments shall be able to communicate with each other. You are permitted to mention proprietary brands/models in your description. Please state assumptions and additional features if any